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In a grating, one of the connecting bars which extend across bearing bars, usually perpendicular to them.



Related Terms

RADIAL TYPE BEARING

A rolling element bearing primarily designed to support load perpendicular to the axis.

ANNULAR BALL BEARING

A rolling element bearing designed primarily to support a load perpendicular to the shaft axis.

CONTACT ANGLE

Formed by a line drawn between the areas of ball and ring contact and a line perpendicular to the bearing axis.

L-4 TEST

An engine test in a six-cylinder spark-ignition Chevrolet engine to evaluate crankcase oil oxidation stability, bearing corrosion, and engine deposits.

COMPASS BEARING

Bearing relative to compass north.

ASSEMBLED BEARING RUNOUT

A displacement of surface of bearing relative to fixed point when one raceway is rotated with respect to other raceway.

PRELUBRICATED BEARING

A shielded, sealed, or open bearing originally lubricated by the manufacturer.

CIRCLE

  1. A plane closed curve all points of which are equidistant from a point within, called the center. A great circle is the intersection of a sphere and a plane through its center; it is the largest circle that can be drawn on a sphere. A small circle is the intersection of a sphere and a plane which does not pass through its center. See also PARALLEL OF ALTITUDE, PARALLEL OF DECLINATION, PARALLEL OF LATITUDE; AZIMUTH CIRCLE, BEARING CIRCLE, DIURNAL CIRCLE, EQUATOR, HOUR CIRCLE, PARASELENIC CIRCLES, POSITION CIRCLE, SPEED CIRCLE, VERTICAL CIRCLE. 2. A section of a plane, bounded by a curve all points of which are equidistant from a point within, called the center.

CORNER REFLECTOR

A radar reflector consisting of three mutually perpendicular flat reflecting surfaces designed to return incident electro- magnetic radiation toward its source. The reflector is used to render objects such as buoys and sailboats more conspicuous to radar observations. Since maximum effectiveness is obtained when the incident beam coincides with the axis of symmetry of the reflector, clusters of reflectors are sometimes used to insure that the object will be a good reflector in all directions. Also called TRIHEDRAL REFLECTOR.

FLOAT CHAMBER

A sealed, hollow part attached to the compass card of a magnetic compass as part of the compass card assembly, to provide buoyancy to reduce the friction on the pivot bearing

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